Struggling with TTLock integration setup

Third party integrations
1

I’m following this guide to install the TTLock integration:

I’ve registered an application at https://open.ttlock.com/manager, and had it approved (I have a client id and secret).

When I try to configure the integration in HA the first prompt I get is for a user id and password. This is contradictory to the guide, which says: “The first credentials you will be prompted for are the Application Client ID & Secret”.
When I try entering the id/password that I used to login to the TTLock app on my phone I get an “invalid client_id” error.
If I try entering the client id and secret instead (in the username/password fields) I get the same error.
I have tried deleting and re-creating the Application Credentials for TTLock in HA, using the Client Id and Secret, but it does not help.
Any idea what the correct process should be?

2

After removing and re-installing the TTLock integration, and deleting the Application Credentials, I then re-installed it. I was prompted to enter my Client Id and Secret (and chose a random name for the credential - I don’t know if the name is significant?). I was then prompted to “Login to TTLock”. I entered my username and password (which I verified at euopen.ttlock.com), but am now being told “invalid account or invalid password”. I tried changing my password at euopen.ttlock.com, but the new password didn’t work either.
Any ideas???